package backend.Java_Demo.reflection;

//通过反射获取类的Class对象
public class Test01 {
    public static void main(String[] args) throws ClassNotFoundException {

        Class c1 = Class.forName("backend.Java_Demo.reflection.User");
        System.out.println(c1);

        Class c2 = Class.forName("backend.Java_Demo.reflection.User");
        Class c3 = Class.forName("backend.Java_Demo.reflection.User");
        Class c4 = Class.forName("backend.Java_Demo.reflection.User");

        //一个类在内存中只有一个Class对象
        //一个类被加载后，类的整个结构都会被封装在Class对象中
        System.out.println(c2.hashCode());
        System.out.println(c3.hashCode());
        System.out.println(c4.hashCode());
    }
}

class User{
    private String name;
    private int id;
    private int age;
    public User() {
    }

    public User(String name, int id, int age) {
        this.name = name;
        this.id = id;
        this.age = age;
    }

    @Override
    public String toString() {
        return "User"+'{'+"name = "+name+','+" id = " +id + ','+" age = "+age+'}';
    }

    private void test(){

    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}